# 定义转换器
from django.urls import converters


class UsernameConverter:
    regex = '[a-zA-Z0-9_]{5,20}'

    def to_python(self, value):
        return str(value)

class MobileConverter:

    regex = '1[3-9]\d{9}'

    def to_python(self, value):
        return str(value)

